diethyl 3-(p-tolyl)oxirane-2,2-dicarboxylate | 1355017-67-2

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: diethyl 3-(p-tolyl)oxirane-2,2-dicarboxylate
• CAS: 1355017-67-2
• 化学式: C₁₅H₁₈O₅
• 分子量: 278.305
• InChiKey: JXJKPNVUMPHDDM-UHFFFAOYSA-N

物化性质

• 沸点：
  336.8±37.0 °C(Predicted)
• 密度：
  1.202±0.06 g/cm3(Temp: 20 °C; Press: 760 Torr)(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.93
• 重原子数：
  20.0
• 可旋转键数：
  5.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.47
• 拓扑面积：
  65.13
• 氢给体数：
  0.0
• 氢受体数：
  5.0

反应信息

• 作为反应物：
  描述：

  苯并噻唑 、 diethyl 3-(p-tolyl)oxirane-2,2-dicarboxylate 在 scandium tris(trifluoromethanesulfonate) 作用下， 以 1,2-二氯乙烷 为溶剂， 反应 72.0h， 以92%的产率得到diethyl 1-methyl-1H-benzo[4,5]thiazolo[3,2-c]oxazole-3,3(3aH)-dicarboxylate
  参考文献：
  名称：

  Highly Chemo- and Diastereoselective Dearomative [3 + 2] Cycloaddition Reactions of Benzazoles with Donor–Acceptor Oxiranes

  摘要：

  A Sc(OTf)(3)-catalyzed dearomative [3 + 2] cycloaddition of benzazoles with donor-acceptor oxiranes through chemoselective C-C bond cleavage of oxiranes was developed under mild conditions. This reaction provides an efficient method to construct benzazolo[3,2-c]oxazole compounds in good yields and with high diastereoselectivity. The reaction has a general substrate scope, and the donor-acceptor oxiranes with electron-donating and electron-withdrawing groups on the aromatic ring afforded the desired cycloadducts.

  DOI：

  10.1021/acs.orglett.8b03615
• 作为产物：
  描述：

  2-[(4-甲基苯基)亚甲基丙二酸二乙酯 在 aluminum oxide 、 sodium hypochlorite 作用下， 以 乙腈 为溶剂， 生成 diethyl 3-(p-tolyl)oxirane-2,2-dicarboxylate
  参考文献：
  名称：

  通过[3 + 3]环戊二氮丙啶二羧酸酯和环氧乙烷与1,4-二噻吩-2,5-二醇的环构构建噻嗪和氧杂蒽：在生物活性分子合成中的应用

  摘要：

  已经开发了路易斯酸用原位产生的巯基醛催化N甲苯磺酰基氮丙啶二羧酸酯和环氧乙烷的[3 + 3]环合反应，以合成功能化的噻嗪和环氧乙烷衍生物。另外，该方法促进了通过去甲苯磺酸化和Krapcho单脱羧的噻嗪的衍生化。

  DOI：

  10.1039/c7ob00941k

文献信息

• Chemo- and regioselective ring-opening of donor–acceptor oxiranes with <i>N</i>-heteroaromatics
  作者：Ji-Wei Sang、Ming-Sheng Xie、Man-Man Wang、Gui-Rong Qu、Hai-Ming Guo

  DOI：10.1039/d1cc00600b

  日期：——

  The first ring-opening of D–A oxiranes with N-heteroaromatics in a chemoselective C–C bond cleavage manner was achieved. In the presence of 5 mol% of Y(OTf)3 as the catalyst, diverse N-heteroaromatics, including benzotriazoles, purines, substituted benzimidazole, imidazole and pyrazole, reacted well with various D–A oxiranes, providing acyclic nucleoside analogues containing a N-glycosidic bond in

  通过化学选择性的C-C键裂解，实现了带有N-杂芳族化合物的D–A肟基的第一个开环反应。在存在5 mol％的Y（OTf）3作为催化剂的情况下，各种N-杂芳族化合物，包括苯并三唑，嘌呤，取代的苯并咪唑，咪唑和吡唑，与各种D-A肟酯反应良好，提供了含有N的无环核苷类似物-糖苷键的产率高达97％，区域选择性高达> 95：5。通过简单的转化，也可以得到更昔洛韦类似物。
• Synthesis of 3-Oxazolines via SnCl4-Promoted Formal [3+2] Cycloaddition of Donor–Acceptor Oxiranes and Nitriles
  作者：Xiaofei Zeng、Guofu Zhong、Hai Zhou、Yan Xie

  DOI：10.1055/s-0034-1380216

  日期：——

  A novel SnCl4-promoted formal [3+2] cycloaddition of donor–acceptor oxiranes and nitriles via chemoselective C–C bond breakage was developed. This reaction provides an efficient and practical method for the preparation of 3-oxazolines in good yields (up to 89%).

  开发了一种新型的 SnCl4 促进的供体-受体环氧乙烷和腈通过化学选择性 C-C 键断裂的正式 [3+2] 环加成反应。该反应为以良好的产率（高达 89%）制备 3-恶唑啉提供了一种有效且实用的方法。
• CO Versus CC Bond Cleavage: Selectivity Control in Lewis Acid Catalyzed Chemodivergent Cycloadditions of Aryl Oxiranyldicarboxylates with Aldehydes, and Theoretical Rationalizations of Reaction Pathways
  作者：Zuliang Chen、Ziqi Tian、Jieming Zhang、Jing Ma、Junliang Zhang

  DOI：10.1002/chem.201201453

  日期：2012.7.9

  A clean break: Lewis acid catalyzed chemodivergent [3+2] cycloadditions of aryl oxiranyldicarboxylates with aldehydes are revealed, in which the CC or CO bond cleavage of oxiranes can be controlled by the use of Ni(ClO4)2 or Sn(OTf)2 catalysts (see scheme). Possible reaction pathways for these transformations are demonstrated by theoretical calculations.

  一个干净的断裂：路易斯酸催化chemodivergent [3 + 2]与醛的芳基oxiranyldicarboxylates的环加成，揭示，其中C  C或C 环氧乙烷的O键裂解可通过使用镍（CLO的控制4）2或Sn（OTf）2催化剂（请参阅方案）。通过理论计算证明了这些转化的可能反应途径。
• Asymmetric catalytic [4+3] cycloaddition of <i>ortho</i>-quinone methides with oxiranes
  作者：Qingfa Tan、Han Yu、Yao Luo、Fenzhen Chang、Xiaohua Liu、Yuqiao Zhou、Xiaoming Feng

  DOI：10.1039/d1cc00262g

  日期：——

  Catalytic enantioselective [4+3] cycloaddition reaction between o-quinone methides and oxiranes was achieved by using a chiral N,N′-dioxide/TbIII complex as the catalyst, affording medium-sized hydrodioxepine derivatives in high yields (up to 99%) with good to excellent diastereo-(up to 94 : 6 dr) and enantioselectivities (up to 97% ee). The topographic steric maps and distribution of the buried volume

  以手性N，N'-二氧化物/ Tb III络合物为催化剂，实现邻醌甲基化物与环氧乙烷之间的催化对映选择性[4 + 3]环加成反应，得到高收率的中型氢二氧杂环庚烷衍生物（高达99％ ）具有良好至优异的非对映体-（高达94：6 dr）和对映选择性（高达97％ee）。通过Cavallo的SambVca 2工具收集了拓扑空间图和催化剂的埋藏量（％V Bur）分布，以有效表示手性N，N'-二氧化物的金属配合物的手性口袋。
• Ni(ClO4)2-catalysed regio- and diastereoselective [3+2] cycloaddition of indoles and aryl oxiranyl-dicarboxylates/diketones: a facile access to furo[3,4-b]indoles
  作者：Jieming Zhang、Zuliang Chen、Hai-Hong Wu、Junliang Zhang

  DOI：10.1039/c2cc16918e

  日期：——

  Ni(ClO(4))(2).6H(2)O-catalysed regioselective and diastereoselective [3+2]-annulations of aryl oxiranyl-dicarboxylates and indoles via selective C-C bond cleavage of oxirane were revealed. The cycloadditions proceed smoothly with high regio- and diastereoselectivity under mild conditions leading to 1H-furo[3,4-b]indoles in good to excellent yields.

  Ni（ClO（4））（2）.6H（2）O催化区域选择性和非对映体选择性[3 + 2]-芳基环氧乙烷基-二羧酸酯和吲哚通过环氧乙烷的选择性CC键裂解而环化。环加成反应在温和条件下以高区域选择性和非对映选择性平稳进行，导致1H-呋喃并[3,4-b]吲哚的产率高至优异。